The Misumalpan languages are a small family of languages spoken by indigenous peoples on the east coast of Nicaragua and nearby areas. The name "Misumalpan" was devised by John Alden Mason and is composed of syllables from the names of the family's three members Miskito, Sumo languages and Matagalpan. It was first recognized by Walter Lehmann in 1920. While all the languages of the Matagalpan branch are now extinct, the Miskito and Sumu languages are alive and well: Miskito has almost 200,000 speakers and serves as a second language for speakers of other indigenous languages in the Mosquito Coast. According to Hale, most speakers of Sumu also speak Miskito.
The Chonan languages are a family of indigenous American languages which were spoken in Tierra del Fuego and Patagonia. Two Chon languages are well attested: Selk'nam, spoken by the people of the same name who occupied territory in the northeast of Tierra del Fuego; and Tehuelche spoken by the people of the same name who occupied territory north of Tierra del Fuego. The name 'Chon', or Tshon, is a blend of 'Tehuelche' and 'Ona'.
Barbacoan is a language family spoken in Colombia and Ecuador.
The Gününa küna, or sometimes, Puelche are indigenous peoples living east of the Andes Mountains in Chile and Southwest Argentina. They spoke the Puelche language. The name "Puelche" was not native, but was given to them by the Mapuche. They were annihilated by plagues and epidemics in the late 18th century, with survivors merging into other groups such as the Mapuche, Het, and Tehuelche.
The Maxakalían languages were first classified into the Jê languages. It was only in 1931 that Čestmír Loukotka separated them from the Jê family. Alfred Métraux and Curt Nimuendajú considered the Maxakalían family isolated from others. John Alden Mason suggests a connection with the Macro-Jê stock, confirmed by Aryon Rodrigues.
Munichi is a recently extinct language which was spoken in the village of Munichis, about 10 miles (16 km) west of Yurimaguas, Loreto Region, Peru. In 1988, there were two mother-tongue speakers, but they had not met since the 1970s. The last known fluent speaker, Victoria Huancho Icahuate, died in the late 1990s. As of 2009 there were several semi-speakers who retained significant lexical, and partial grammatical, knowledge of the language.
Lule is an indigenous language of northern Argentina.
The Chicham languages, also known as Jivaroan is a small language family of northern Peru and eastern Ecuador.
Páez is a language of Colombia, spoken by the Páez people. Crevels (2011) estimates 60,000 speakers out of an ethnic population of 140,000.
Andaqui is an extinct language from the southern highlands of Colombia. It has been linked to the Paezan or Barbacoan languages, but no connections have been demonstrated. It was spoken by the Andaqui people of Colombia.
Aikanã is an endangered language isolate spoken by about 200 Aikanã people in Rondônia, Brazil. It is morphologically complex and has SOV word order. Aikanã uses the Latin script. The people live with speakers of Koaia (Kwaza).
The Karirí languages, generally considered dialects of a single language, were a group of languages formerly spoken by the Kiriri people of Brazil. It was spoken until the middle of the 20th century; the 4,000 ethnic Kiriri are now monolingual Portuguese speakers, though a few know common phrases and names of medicinal plants.
Cacán is an extinct language that was spoken by the Diaguita and Calchaquí tribes in northern Argentina and Chile. It became extinct during the late 17th century or early 18th century. The language was documented by the Jesuit Alonso de Bárcena, but the manuscript is lost. Genetic affiliation of the language remains unclear, and due to the extremely limited number of known words, it has not been possible to conclusively link it to any existing language family.
The Aimoré, Botocudoan or Borum languages, now sometimes known as Krenakan after the last one remaining, are a branch of the Macro-Jê languages – spoken mainly in Brazil – including moribund Krenak and extinct languages such as Guerén and Nakrehé. Loukotka (1968) considered them dialects of a single language, but more recent treatments describe at least some of them as separate languages.
The Kamakã languages are a small family of extinct Macro-Jê languages of Bahía, northeastern Brazil. The attested Kamakã languages are:
The Huarpes or Warpes are an indigenous people of Argentina, living in the Cuyo region. Some scholars assume that in the Huarpe language, this word means "sandy ground," but according to Arte y Vocabulario de la lengua general del Reino de Chile, written by Andrés Febrés in Lima in 1765, the word Cuyo comes from Araucanian cuyum puulli, meaning "sandy land" or "desert country".
Allentiac (Alyentiyak), also known as Huarpe (Warpe), was one of two known Warpean languages. It was native to Cuyo in Argentina, but was displaced to Chile in the late 16th century. Luis de Valdivia, a Jesuit missionary, wrote a grammar, vocabulary and religious texts. The people became mestizo and lost their language soon after.
The Het were the people of the northern Patagonian pampas west of the Paraná River: The Chechehet, the Diuihet or Didiuhet, and the Taluhet. The easternmost Didiuhet, near modern Buenos Aires and influenced by the Guarani, were called the Querandí (see). It is not clear if these three peoples were related linguistically or only culturally.
Humahuaca (Omaguaca) is an extinct language of Argentina. Tribal and possibly dialect divisions were Fiscara, Jujuy, Ocloya, Osa, Purmamarca, and Tiliar. Mason (1950) proposed that Humahuaca was related to Diaguita (Cacán) and Kunza in a group he called "Ataguitan".
